Narrated Abu Hurairah:
regarding Allah's saying: "It may be that your Lord will raise you to a praised station (17:79)" that the Messenger of Allah (ﷺ) was asked about it and he said: "It is the intercession." (PT)
English reference (PT): Vol. 5, Book 44, Hadith 3137 (PT)
Arabic reference (PT): Book 47, Hadith 3430 (PT)